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let-sin-a-8-17-with-a-in-qii-and-sin-b-12-13-with-b-in-qiii-a-find-sin-a-b-cos-a-b-pa635

Let

`sin(A)=(8)/(17)`

with

`A`

in QII and

`sin(B)=-(12)/(13)`

with

`B`

in QIII. (a) Find

`sin(A+B),cos(A+B)`

, and

`tan(A+B)`

.

```
sin(A+B)=
cos(A+B)=
tan(A+B)=
```

(b) In what quadrant does

`A+B`

terminate? QI QII QIII QIV